this is not a model of a x-304*****SPOILERS SEASON 4 FINALE*****This is just a work in progress for me and a friend just for him to upload i will add the finished version soon. Now to explain what i am doing i am the leader of a group called (SGC) Stargate command and i am starting to build ships and stations and stuff like that for my group my group is open to anyone if they want to join search my steam name (SGC) oneill and ask any questions but i will explain more when i do further uploads once again it a WORK IN PROGRESS! for me and my friend. NOT THE X-304 CLASS! I.E PHOENIX FROM ATLANTIS SEASON 4

This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below: